Apparatus for drying substances.



W. LIERFELD.

APPARATUS FOR DRYING SUBSTANCES.

APPLICATION FILED DEC. 5, 1911.

1,061,762. Patented May 13, 1913.

WITNESSES INVENTOR W Walther Lier'feld.

El I Alt arm COLUMBIA PLANOGRAPN 60.. WASHINGTON. u c.

WALTHER LIERFELD, OF DORTMUND, GERMANY.

APPARATUS FOR DRYING SUBSTANCES.

Specification of Letters Patent.

Patented May .13, 1913.

Original application filed. March 8, 1911, Serial No. 613,055. Dividedand this application filed December To all whom it may concern:

Be it known that I, VVAL'rrnm LIERFELD, a subject of the Emperor ofGermany, residing at Dortmund, Kingdom of Prussia, Germany, haveinvented new and useful Improvements in Apparatus for Drying Substances,of which the following is a specification.

This invent-ion relates to improvements in apparatus for dryingsubstances and is a divisional case from my eo-pending applicz tionfiled March 8, 1911, Number (313,055.

The invention relates to that class of apparatus in which the substanceto be dried is delivered into a drum, usually in the form of acylindrical rotary shell, and wherein the shell is provided with aplurality of inwardly directed shelves 011 which the material is caught,during rotation, and subscquently released and allowed to descend intothe shell to be subdivided and disbursed in such a manner as tofacilitate athorough drying of the same.

My invention will be more fully described in connection with theaccompanying drawing and will be more fully set forth in the appendedclaims.

In the drawings :Figure 1 is a view in elevation, illustrating anapparatus embodying my invention. Fig. 2 is a vertical sectional viewtaken on line 22 of Fig. 1.

Like numerals of reference designate similar parts throughout thedifferent figures of the drawing.

As illustrated, the invention includes a shell or drum 1, preferablycylindrical, which may be rotatably mounted upon wheels 2 and 3,disposed on opposite sides of the center of said drum. The drum may beprovided with a conical end 4 into which a charging hopper 5, with aninlet 6, may be arranged to deliver the substance thereto. A suitablesource for supply of heat may be in the form of a furnace 7 arranged todeliver to said drum through a tube 8.

The drum or casing 1 is provided with a plurality of peripherallydisposed and inwardly radially extending shelves 9 which may be providedwith angular-1y disposed extensions 10. The angular disposition of theextensions 10 is in a direction reverse to the direction of rotation,preferably, so the said extensions 10 may act as inclined dischargingportions when the same are in the positions shown at m and m, said eX-Serial No. 664,057.

tensions acting as deflecting portions when in the position shown .in a.A. chamber is formed in the drum by an axially disposed member which maybe in the form of a tube 11. -As shown, the tube 11 and the drum 1 areconnected by radial partitions 12 forming a centrally disposed structurewhich extends from the tube 11. to the raising 12 and which may, in theform shown, he impel-forate. As illustrated, the partitions 12 areconnected with the tube 11 by angle irons 13,

and angle irons 14L connect said partitions with the casing 1. Saidpartitions subdivide the chamber formed by the casing 1 into secondarychambers 15 which may extend throughout the length of said casing, inaccordance with the length of the partition 12. The drying medium may bedischarged into the chambers 15 and also into the tube 11 so that all ofthe surface portions of the interior of the casing 1 will be renderedeffective as drying means. Each partition 12 is provided with aplurality of intercepting abutments the purpose of which is to interceptthe substance falling from the shelves 9 and deflect the course thereofso as to expose all portions to the drying action of the heat mediumpassing through said chamber.

On one side of each partition 12 two relatively short abutmeuts 1G and17 are secured and each of these abutments is provided with terminalportions, preferably inclined, as at 18 and 10, so that when they are ina lowermost position they act as collecting portions and, when in theuppermost positions, as deflecting or discharging portions. Theabutments 16 and 1.7, which are relatively short, extend toward theplanes of the shelves S) and are located rearwardly of the shelves 9with respect to the direction of rotation of the drums.

()n the partition 12, and located forward of the shelves 9, with respectto the direction of rotation of the drum 1, are relatively longabntmcnts 20 and 21. Each of the abutincnts 20 and 21 is provided with aterminal portion which is preferably inclined, as indicated at 22 and23. The inclination of the tern'iinals 22 and 23, is radially inwardly,so that the same form collecting portions when the abutments are intheir lowermost positions and form deflecting and discharge portionswhen said abutments are in an uppermost position.

by and projecting from said casing to elevate and then drop thematerial, a tube cent-rally disposed in said casing, and abutments forintercepting the material spaced at different radial points between saidtube and said shelves.

2. A drying apparatus comprising in combination, a revoluble casingprovided With a plurality of peripherally disposed shelves carried byand projecting from said casing to elevate and then drop the material,

a tube in said casing, and partitions extending from said tube to saidcasing and dividing the same int-o chambers, substantially as described.

3. A drying apparatus comprising in combination, a revoluble casingprovided With a plurality of peripherally disposed shelves carried byand projecting from said casing to elevate and then drop the material, atube centrally disposed in said casing, partitions extending from thesaid tube to said casing and dividing the same into a plurality ofchambers, and a plurality of abutments extending from said partitionsand disposed at diiferent radial points with respect to said shelves,substantially as described.

In testimony whereof I affix my signature.

in presence of tWo Witnesses.

VVALTHER LIERFELD. Witnesses ALBERT NUFER, HELEN NUFER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents} Washington, D. G.

